If you as an advertiser is targeting 1 million impressions for your campaign which has a CPM of 2 dollars, then the total cost of your campaign would be:

(1,000,000 x 2)/1,000 = $2,000

If you don’t want to bother with the mathematics part, click here for our CPM calculator that will calculate the campaign cost on the basis of number of views that you are targeting and the CPM as quoted by your advertisement agency.